Project Description
PhysicalMeasure is a C# library for handling physical quantities by specifying value and unit. Scaling of units and conversions between multiple unit systems.
Concept
This library is a C# implementation of the concepts of system of physical units. eg. as found on Wikipedia: http://en.wikipedia.org/wiki/International_System_of_Units.
Examples
PhysicalMeasure can be used to represent and handle physical measures and calculations of physical properties. like this:
using PhysicalMeasure;
using static PhysicalMeasure.SI;
public Quantity CalculateEnergyIn1Gram()
{
Quantity M = 0.001 * Kg;
Unit MeterPerSecond = m / s;
Quantity c = 299792458 * MeterPerSecond;
Quantity E = M * c.Pow(2);
Quantity expected = (0.001 * 299792458 * 299792458) * J;
Debug.Assert(expected == E);
return E;
}
PhysicalMeasure also supports user defined units and unit systems:
using PhysicalMeasure;
using static PhysicalMeasure.SI;
public String CalculatePriceInEuroForEnergiConsumed()
{
BaseUnit Euro = new BaseUnit(null, (SByte)MonetaryBaseQuantityKind.Currency,
"Euro", "€");
ConvertibleUnit Cent = new ConvertibleUnit("Euro-cent", "¢", Euro,
new ScaledValueConversion(100)); /* [¢](¢) = 100 * [€](€) */
UnitSystem EuroUnitSystem = new UnitSystem("Euros", Physics.UnitPrefixes, Euro, null,
new ConvertibleUnit[]() { Cent });
Unit EurosAndCents = new MixedUnit(Euro, " ", Cent, "00", true);
Unit kWh = Prefix.k * W * SI.h; // Kilo Watt hour
Quantity EnergyUnitPrice = 31.75 * Cent / kWh;
Quantity EnergyConsumed = 1234.56 * kWh;
Quantity PriceEnergyConsumed = EnergyConsumed * EnergyUnitPrice;
Quantity PriceEnergyConsumedEurosAndCents =
PriceEnergyConsumed.ConvertTo(EurosAndCents);
Double PriceInEuroForEnergyConsumed = PriceEnergyConsumed.ConvertTo(Euro).Value;
String PriceInEuroForEnergyConsumedStr = PriceEnergyConsumedEurosAndCents.ToString();
Debug.Assert(PriceInEuroForEnergyConsumed == 31.75 / 100 * 1234.56);
Debug.Assert(PriceInEuroForEnergyConsumedStr == "391 € 97 ¢");
return PriceInEuroForEnergyConsumedStr;
}
PhysCalc console application
PhysCalc is a calculator using PhysicalMeasure to evaluate physical expressions. Nuget package
PhysicalMeasure are available as a Nuget package at
Links
Additional information from Wikipedia on physical quantities and units:
Additional information from Wikipedia on SI units that I have covered in this library:
Other .Net libraries and utilities related to unit conversion